Range



J. H. DEAN.

RANGE.

APPLICATION FlLED AUG.4| 1919.

- 2-SHEETSSHEET I.

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J. H. DEAN.

RANGE.

APPLICATION FILED AUG.4, I919.

Patented Dec. 2,1918 2 SHEETS-SHEET 2 JAMES H. DEAN,

OF CHICAGO, ILLINOIS, ASSIGNOR TO COLE MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION.

RANGE.

Specification of Letters Patent.

Patented Dec. 2, 1919.

Application filed August 4, 191 9. Serial No. 315,239.

. companying drawings, forming a part of this specification.

My present invention relates more particularly to that class of ranges commonly employed for' the burning of both solid and gaseous fuels. The invention consists in the features of "mprovement hereinafter described, illustrated in the drawings andparti cularly pointed out in the claims at the end of this specification.

Figure 1 is a view in front elevation of a range embodying my invention, parts being shown i vertical section. Fig. 2 is a view in verticalsection of the portion of the range immediately about the gaseous fuel burner.

Fig. 3 is a detail view illustrating the connections whereby is effected the conjoint operation of certain parts hereinafter described. Fig. 4 is an end view of the range. Fig. 5 is a view showing in section part of the end wall of the range oven and its door and showing parts of the operating and controlling mechanism. Fig. 6 is an. enlarged detail view of the controlling mechanism.

My invention as shown is embodied in a range of the type commonly designated as a combined coal and gas range, although features of the invention will be found applicable to ranges in which gaseous fuel only is employed. The oven A of the range is located above the usual passage or flue B by which the products of combustion pass from the fire box for solid fuel, this passage or fiue B communicating with the smoke pipe flue C at the back of the range. The fire box for the solid fuel may be of any usual or suitable construction and forms no part of the present invention.

The bottom wall of with a circular opening within which is placed a burner D for the gaseous fuel, this burner D being rigidly mounted on the upturned end of the gas supply pipe E. The diameter of the burner D is somewhat less than the diameter of the opening formed in the bottom plate of the oven A,-thereby forming an annular air supply port a around the oven A is provided the burner and the burner head D is flush with the bottom of the oven A.

, Upon the upturned end of the pipe E is movably mounted an air supply valve F of a size adapted tofill the annular port a that surrounds the burner D. As shown, the

valve F has depending arms 7 attached to or formed in piece with a sleeve f that is slidably mounted upon the upper end of the pipe E immediately beneath the burner head D. Beneath the opening formed in the bottom wall of the oven A is secured an annular casing or burner chamber G that rests upon and connects with the upturnedannular portlon g rising from the bottom of the range, the lower part of this portion 9 being open to the atmosphere, as clearly shown in Figs. 1 and 2 of the drawing. To the lower end of the sleeve f is pivotally connected the upper end of the link h,.the lower end of this link being pivotally connected to the lever arm 72/ that is pivoted, as at h to a lug .on the under side of the bottom of the range. The outer end of the lever arm h is pivotally connected to an upwardly extending link h the upper end of which is plvotally connected to a lug or lugs h extending from a rock shaft H (see Figs. 3, l and 5). The rock shaft H is shown journaled in a bracket it mounted on the end of the range. One end of the rock shaft H is connected to a plug on the as supply valve J mounted in the gas supp y pipe E, while the outer end of the rock shaft H has a crank it that is pivotally connected to a link it that actuates a damper K whereby the exit of the products of combustion from the oven is controlled.- This damper K is pivotally mounted at the discharge end of a flue K that extends across the top of the oven A,

this flue being provided with the usual pipe. The damper K may consist of a sim-' ple flat plate pivotally mounted on the rod 70, the end of this rod extending outside the flue C and being provided with an arm k. that pivotally connects with the upper end of the link 72.".

The opposite end of the plug of the gas supply valve J is connected at one end to the rock shaft H, the front end of this rock shaft passing through a wall or bracket integral therewith a finger 1n to operate with a dial m to indicate the extent of opening of the valves controlled by the rock shafts H and H.

The operation of the parts thus far described will be seen to be as followsi When the air supply valve F is in the position shown'in Fig. 1, it will close the annular port around thehead of the burner D and at such time the gas supply valve J and the damper K will also be closed. When it is desired to heat the oven A by gas, (the oven door having been first opened) the. attendant'will turn the handle M in the direction of the arrow in Fig. 1 and by turning the handle M in such direction, will cause the rock shafts H and H in turn in unison, thus opening the gas supply valve J and causing the annular valveF to move downwardly below the annular port or channel a in the bottom of the oven A. As the annular valve F is thus moved from the position shown in Fig. 1 to or toward the position shown in Fig. 2, the jet ports of the burner head will be uncovered and a free space for the passage of air upwardly through the annular port a .will be afforded-the movement of the gas supply and air supply valves being thus efl'e'cted simultaneously and in unison. When'the supply of air is to'be cut off, this will be effected by shifting the handle M in the direction opposite the arrow shown in F i 1, the annular'valve F being thus restore to the position shown in Fig. 1 of the drawings.

One marked advantage incident to my invention is that when the parts are in the position shown in Fig. 1 and the oven is being heated by solid fuel, the bottom of the oven is entirely unobstructed and when the oven is being heated by gas, the gas burner does not project into the oven or in any manner decrease its capacity. Hence, amovable plate or diaphragm a can be arranged immediately above the bottom of the oven, which would not be possible if the burner were projected .into the oven when in use. Moreover, the employment of the vertically movable air supply valve contributes to the cleanliness of the oven, as any material falling on the bottom thereof can be readily discharged through the annular porta.

In order to prevent the turning on of the gas to'the burner D while the oven is closed and to prevent the accumulation of a volume of unburnt gas in the-oven, which might cause an accidental explosion, I provide means whereby the turning on of the as to the oven shall be rendered impossi 1e until after the oven door has been opened. The preferred. embodiment of this feature is provided with a pocket]? and over the mouth of this pocket projects a flange or lug a (attached to the inner face of the oven door A) when said door is in closed position (see Fig. 5). Through theouter end of the pocket P passes a controller. rod' R the outer end of which is pivotally connected to an arm 71. on the rock shaft-H (see Figs. 3- and 4). To the inner end of the controller rod R is pivotally connected, as at r, a latch or controller R that is normally held in the position shown by full lines in Fig. 5 by a plate spring S, the opposite end'of which spring is fixed to the rod B, When the parts are in inoperative position, as shown in Figs. 1, 3, 4 and 5 of the drawings, all the valves, will be closed and the oven door A will also be closed, and the flange or lug a that is fixed to the oven door will project across the end of thecontroller R. Obviously, with the parts in such position, any attempt to shift the rock shafts H, H or the handle M will be prevented, because no inward movement of the controller R and the controller rod R can t occur so long as the lug or flange a of the door A v stands opposite the controller B. When, however, the oven door is open, the flange a will be moved away from opposite the controller R, and the shifting of the several valves can be effected in a manner hereinbefore described. When the oven door has been thus opened and the'controller rod- R has shifted the controller in wardto the position shown bydotted-lines in Fig. 5, the oven door can be thereafter closed because, the fiange a on the over door A will simply contactwith thecontroller R and swing it inwardly upon its pivot 1'. Hence, while the controller will 7 prevent any vadmission of as to the burner D until the oven door has en first opened, it will not prevent the opening. and closing of the oven door thereafter.

The part F, which I have termed the air I supply valve, has, in. the preferred form of the invention, various advantages. Thus,

for example, this part F being in close proximity to the perlphery of the burner D,

serves to prevent any accumulation of mod nets of combustion. or other foreign matter upon such portion of the burner and hence tends -to avoid the stoppage of the escape' I ports that are formed in the periphery of the burner,

It will be seen that inasmuch as the body of the burner below its peripheral portion'is inclined inwardly and downwardly, it follows that as. the annular valve F is lowered, the quantity of air admitted to the burner is materially increased. Moreover, as the valve F is lowered, the upward current of air striking the inclined lower portion of the burner tends to project or spread the flame horizontally from the burner, rather than direct it vertically, and this, is advantageous, as it' avoids the necessity-of employing a baflie plate for the burner.

Having thus described my invention, what I claim as new and desire to'secureby Letters Patent is 1. A range of the character described comprising an'oven, a burner chamber opening into the bottom of said oven, a stationary burner in the upper portion of said chamber, a horizontally arranged annular valve at the top of said chamber adapted to extend across and close the space around the upper portion of the burner, and means for shifting said valve.

2. A range of the character described com prising an oven having an opening in its bottom, a gas burner set within said opening and having radial ports and a flat top substantially flush with the bottom of the oven, the diameter of said burner being smaller than that of said opening to form an air admission port around said burner, a valve separate from said burner located below the top of said burner and adapted to close said air admission port, and means for shifting saidvalve. a v

3. A range of the character described comprising an oven, a burner chamber opening raised and into the bottom of said oven, a burner in the 7 .upper portion of said chamber, a horizontally arranged annular valve atv the top of said chamber and. separate from said burner, said'valve being adapted to extend across and close the space around the upper portion of the burner, and means for shifting said valve below and out of the path of the flame issuing from said burner.

4:. A range of the character described com upper portion of said fromthe'walls thereof, said burner having laterally directed gas ports in its periphery and a closed top substantially in line with the oven bottom, and a shiftable valve plate separate from said burner adapted to close the upper endof said arranged within the chamber and spaced burner chamber and out off communicationed to said air supply valve,

prising an oven, a burner. chamber opening 7 into the bottom of said oven, a gas burner plate separate from said burner and extending around the periphery thereof substantially in line with the oven bottom, and means for shifting said valve plate.

6. A range of the character described comprising an oven provided at its bottom with a stationary gas burner the top of which is substantially flush with said bottom, said oven having an annular air supply port extending around said burner, an annular air supply valve located within said supply port, a gas supply valve for controlling the flow of gas to said burner, and means whereby said air supply valve and said gas supply valve may be shifted in unison.

7 A range of the character described comprising an oven provided at its bottom with a stationary gas burner and having an air supply port around said burner, a horizonply port, a lever suitably connected to said air supply valve, and whereby it may be lowered, a gas supply valve for controlling thefiow of gasto said burner, and means for shifting said gas supply valve connected to said lever whereby said valves may move in unison.

'9. A range of the character described comprising an oven provided at its bottom with a stationary gas burner and having an air supply port around said burner, a vertically movable air supply valve located at lever connectarock shaft connected to said lever, a gas supply valve for controlling the flow of gas to said burner, said gas supply valve being connected to said rock shaft, and a handle whereby said rock shaft may be shifted to efi'ect the .unison movement of said valves. I

10. A range of the character described having an oven provided with escape ports at its top and provided at its bottom with a stationary gas burner and having an air supply port located around said burner, an annular air supply valve located at said air supply port, a damper for controlling the passage of products of combustion through said escape ports, a gas supply valve for controlling the supply of gas to said burner, and means connecting said air supply valve, said gas supply valve and said damper whereby they may be shifted in unison.

' JAMES H. DEAN.

said air supply port, a pivoted 

